To directly answer your question...
1. The
MA2 will have better wind handling than the Mini (and likely than the
Mini2).
2. The
MA2 will have better range than the Mini (similar to the
Mini2).
3. The
MA2 has a *slightly* larger sensor that can resolve 48MP photos, but that won't make much difference. (It might give you a bit of a dynamic range advantage, though, due to the Sony's sensor architecture.)
4. The
MA2 can do 4k60 video, which the Mini cannot (2.7k) and the
Mini2 cannot (4k60)
5. The
MA2 can do HDR video at 30fps or lower. Neither Mini can.
6. The
MA2 can record in a flat color profile, unlike either Mini.
7. The
MA2 can do in-camera HDR photo or up to 5 bracketed shots, unlike either Mini
8. The
MA2 can shoot photos in RAW, unlike the Mini (the
Mini 2 can shoot in RAW, though)
9. The
MA2 has slightly better battery life if that matters.
10. The
MA2 has one more quick shot (Asteroid) and several tracking modes, all of which are absent on the Mini or
Mini2.
11. The
MA2 has front and back obstacle sensing, with APAS to help automatically find pathways through obstacles at times. Neither Mini has those.
The only effective downside of the
MA2 is size. It's bigger and heavier to carry and requires registration. Registration is easy in the US, so that's a non-issue from my standpoint unless you feel strongly about the privacy angle. Both drones have to follow the laws in the exactly same way. (The only other technical advantage of the
Mini 2 is Galileo as an additional positioning system, but it's possible that the
MA2 could be updated with it at some point. And, in any case, it's not a huge deal at the moment.)
For me, HDR and tracking were enough to drive me up to the
MA2; I'm sure the reasons are different for other people.
I hope this helps!